The GMC Sierra 1500 is unchanged for 2013 with the exception of a minor update to the transmission. The automatic gearbox will now use the engine to assist with braking on hill descents even in normal mode.

Full-size trucks are used in such a wide range of situations--from construction fleets to long-distance driving--and the broad range of interiors and hauling/towing options offered in the GMC Sierra and help satisfy shoppers better than most other competing models. SLE and SLT models are probably the best fit for buyers who need the sturdy, get-messy capability of a pickup at least some of the time, but the Sierra Denali is the choice for those who need a pickup that doesn't compromise luxury. And for those who need a pickup but want to make a greener choice, with even lower operating costs, the Sierra Hybrid makes up to 25% better fuel economy without sacrificing much towing or hauling ability.